Apparatus for handling vapors



March 23 1926. a

G. s. W lTHAM, JR APPARATUS FOR HANDLING VAPORS Filed April 10. 1922 2 Sheets-Sheet l March 23 1926.

G. S. WITHAM, JR

' APPARATUS FOR HANDLING VAPORS Filed April v 1922 2- Sheets-Sheet im MW Patented Mar. 23, 1926.

UNITED STATES PATENT OFFICE.

GEORGE STANFORD WITHAM, JR., OF HUDSON FALLS, NEW YORK, ASSIGNOR T AMERICAN BLOWER COMPANY, O]? DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

APPARATUS FOR HANDLING VAPORS.

Application filed April 10, 1922. Serial No. 551,416.

To all whom it may concern Be it known that I, GEORGE STANFORD WITHAM, Jr., a citizen ofthe United States. residing at Hudson Falls, in the county of 6 Washington and State of New York, have invented certain new and useful Im rovements in Apparatus for Handling apors, of which the following is a specification, reference being had therein to the accom- 10 panying drawing.

This invention relates to an improved apparatus for handling vapors given ofl 0111 various kinds of machines, paper driers, driers of all classes, cooling vats, ket- 6 tles, cooking ranges, and analogousmachines.

The object of the invention is to provide an improved, simple and eflicient apparatus whereby the vapors from machines of the character referred to can be treated and advantageously disposed of to further the operation of the main machine or apparatus.-

and to maintain atmospheric conditions within the work room suitable to operators and prevent the harmful effects to struc- 95 tures and serious losses due to the presence of heavy moisture laden air throughout the drg ing room. 1 a

he invention comprehends passing the vapors directly from the drier or other 8 .apparatus through a chambered or double walled hood arranged over the apparatus, and circulating a fluid in the chamber of the hood to maintain the same relatively hot or cold, at a certain temperature relative to the temperature of the vapor in accordance with the requirements, the invention in its broader aspect contemplating the condensation of the vapor in some instances,

but having to do more particularly with 40 the treatment of the vapor to prevent conden'sation thereof, asin the operation of paper drying machines, in which condensation of the vapor over the machine is highly objectionable, such condensation damaging 5 the paper and felts and resulting in serious loss in the manufacture thereof. In the latter case the invention contemplates passing the vapor through a chambered hood arranged over the drier or other machine, and circulating a fluid, in this instance, hot air, in the chamber of the hood to maintain the hood at a hi her temperature than the temperature of t e vapors rising from the vantages. thereof, will be understood from the hereinafter contained detailed description, when considered in connection with the accompanying drawings forming part hereof and illustrating one embodiment of the apparatus.

In the drawings:

Figure 1 is a side elevation of an apparatus constructed in accordance with the present invention applied toa paper drying machine.

Fig. 2 is a top plan view.

Fig. 3 is a longitudinal section.

Fig. 4 is a section on the line 4.4 of Figure 3.

subjected Fig. 5 is a section on the line 5-5 of Figure 3.

Figs. 6 and 7 are detailed views of the hot air supply duct.

Fig. 8 is a detailed section, on an enlarged scale, of a lower side portion of the hood.

In the drawings, A designates a conventional form of paper drying machine having the series of rolls over which the paper passes.

In the particular form of vapor handling and treating apparatus illustrated in the drawings, 1 designates the hood arranged over the top of the paper drying machine A, as shown. The hood 1, which is substantially rectangular in shape at its lower end, has double end walls 2-2, side walls 45-4 and top walls 5-5', said walls being spaced, as shown, providing an interior chamber 0 extending throughout the length of the hood and around the ends thereof. The hood is provided with stacks 6 which may lead to any suitable point at which it is desired to deliver the vapors. In this particular instance two stacks are shown extending throughthe roof of the building, indicated generally by the line b, to ventilators 7, sald stacks 6 having double Walls, the chambers 6 within the walls of the stacks, connecting i so with the interior chamber 0 in the walls of of course be understood that the hood may the hood. The side walls 4'4 of the hood which are inclined as shown, and the end walls 2-2 are separated at their lower ends. Extending outwardly from the inner side and end walls 4'2 is a bafiie wall 2, and the outer side and end. walls 42 have portions extending below the lower ends of the inner walls 2'4, and formed to direct the air inwardly of the hood, said portions2 being shown curved. The bafiie wall 2 is shown as formed of separate plates secured at their inner ends to the inner walls 2'4 by screws or other equivalent means, and 10 are metal strip members secured to the lower ends of the side and end walls, said strip members serving as spacing and reinforcing means for the walls of the hood, and also to support the bafile wall 2*. The hood' may be constructed of any suitable material, in the exemplification shown, the same being formed of metal, galvanized iron, aluminum, or the like and made in sections suitably connected together.

8 designates a hot air duct connected with the hood at one end thereof and leading into the interior chamber 0, said hot air duct leading from any suitable source of hot air supply and having associated therewith suitable air forcing means, as a blower,(not shown).

Extending centrally and longitudinally within the hood near the lower portion thereof is a hot air supply pipe 9, said pipe,

having a connection 9' at one end with the hot air sup-ply duct 8, and being provided at its under side with a plurality of jet orifices 9 adapted to direct hot air downwardly within the hood in the direction of the rolls a.

The hot air is forced into and circulated throughout the interior chamber 0 and the chamber 6 of the stacks 6, maintaining the hood with its stack portions at the desired temperature. The hot air passes downwardly from the chamber 0 and around the lower end portions of the inner walls 4.- to

the interior of the hood, thence upwardly in the hood, are subjected to the influence of the hot surfaces of the hood, and the hot air circulated within the hood', so that condensation of the same is prevented. the vapors passing from the hood through the stacks .6 and out through the ventilators,-

the circulation of the air around the lower side walls of the hood inwardly thereof servthe material, the hot air supplied by the hotair pipe 9 also contributing to this result.

While in the drawings a specific embodiment of the invention is illustrated, it will take various forms to accord with different types of drying, heating, cooking machines or the like, and that other changes and modifications of the particular construction shown, and the carrying out of the invention in other forms, as will appeal to those skilled in'the art and falling Within the scope of the appended claims may be practiced without departing from the spirit of the invention. The invention in its broader aspect contemplates the circulation of fluid at different temperatures in the interior chamber in the walls of the hood to maintain the same at different temperatures relative to the vapors to produce different results. In performing certain operations with other kinds of apparatus, in whichit is desirable to condense the vapors arising therefrom, this, as will be understood, may be readily accomplished by circulating cold air through the interior chamber of the hood,which may also be modified to accord with this character of treatment.

What I claim is:

1. The combination with an apparatus from which condensable vapors are given off, of a hood associated with said apparatus to receive the vapors directly therefrom, and means 'for circulating a heating fluid in contact with the walls of the hood and inwardly around the bottom thereof to the interior of the same to maintain the hood at a certain temperature relative to the temperature of the vapors and to assist the circulation of the vapors through the hood.-

2. The combination with a paper drying machine, of apparatus for preventing condensation of the vapors over the machine, said apparatus including a hood, means for circulating a heating fluidin contact with the walls of the hood to maintain the hood at the required temperature relative to the temperature of the vapors, a pipe within the hood near the lower part thereof, said pipe having discharge orifices, and means for supplying heated air to said pipe.

3. The combination with a .paper drying machine, of apparatus for preventing condensation of the vapors over the machine, said apparatus including a hood, means for circulating heated air in contact with the walls of the hood, and an air supply pipe within the hood near the lower part thereof, said pipe having discharge orifices in the under side thereof, and means for supplying heated air to said pipe.

4. The combination with an apparatus from which condensable vapors are given off, of a hood associated therewith to receive the vapors directly therefrom, a stack leading off from said hood, the hood having double walls with an'interior chamber therebetween, and said hood having a discharge outlet opening from said interior chamber means'fo'r supplying heated air to said interior chamber of the hood to heat the walls of the hood and to assist the circulation of the vapors through the hood.

5. The combination with a drying machine, of a hood associated directly therewith to receive the vapors directly therefrom, a stack leading off from the hood, said hood having double walls with a chamber therebetween, the hood at its lower end having an opening extending completely around the same from said chamber, and means for supplying heated air to the hood to heat the walls thereof and to assist the circulation of the vapors through the hood.

6. The combination with an paratus from which condensable vapors di e given off, of a hood arranged over the apparatus, a stack connected with the hood, said hood having double side and end walls with an interior chamber therebetween, the hood having a discharge outlet completely about its lower end from said interior chamber,

means at the lower end of the hood for deflecting the air from said discharge outlet inwardl of the hood, and means for supplying eated air to said interior chamber to heat the hood and to assist the circulation of the vapors through the hood.

7. The combination with a paper drying machine, of a hood arranged over the machine, a stack connected with the hood, the

- to receive the vapors directly therefrom,

means for maintaining. the hoodat a certain temperature relative to the temperature of the vapors, and'means for supplying heated air to the interior of. the hood.

9. The combination with an apparatus from which condensable vapors are given oil, of a hood associated with sald apparatus to receive the vapors directly therefrom,

means for maintaining the hood at a certain temperature relative to the temperature of the vapors, and means for supplying heated air to theinterior of the hood at the lower part thereof 10. The combination with an apparatus 'from which condensable vapors are given 01f, of a hood associated with said apparatus to receive the vapors directly therefrom, means for maintaining: the hood at a certain temperature relative to the temperature 'of the vapors, and means providing for the circulation of heated air inwardly into the hood from the sides thereof.

ing 0 11. The combination with an apparatus from which condensable vapors are given off, of a hood associated with said apparatus to receive the vapors directly therefrom, means for maintaining the hood at a certain temperature relative to the temperature of the vapors, and means providing for a circulation of heated air inwardly from the lower marginal portions of the Wall of the hood to the interior of the same.

12. The combination with an apparatus from which condensable vapors are given off, of ahood associated with said apparatus to receive the vapors directly therefrom, means for maintaining thehood at a certain temperature relative to the temperature of the vapors, means providing for a circula tion of heated air inwardly from the lower marginal portionsof the hood to the interior of the same, and means for supplying heated air to the interiorof the hood at the-lower part thereofintermediate its side walls.

13. The combination with an apparatus from which condensable vapors are given off, of a hood associated therewith to receive the va ors directly therefrom, a stack leadd from thehood, said hood having double walls with an interior chamber therebetween, and said hood having a discharge outlet extending along a lower marginal portion thereof from said interior chamber adjoining the, interior of the hood, and means for supplying'heated air to the interior chamber of the hood to heat the walls thereof and to assist the circulation of the vapors through the hood.

14:. The combination with an apparatus from which condensable vapors are given off, of a hood associated therewith to receive the vapors directly therefrom, a stack leading oif from the hood, the hood having double walls with an interior chamber therebetween, and said hood having a discharge outlet along a lower marginal portion thereof, means for supplying heated air to the interior chamber of the hood to heat the-jwalls thereof and to assist the circulationof' the vapors through the hood, and means associated with said discharge outlet for deflecting the air inwardly of the hood from said outlet.

15. The combination with an apparatus from which condensable vapors are given off, of a hood associated therewith to receive the vapors directly therefrom, a stack leading off from the hood, said hood having double walls with an interior chamber therebetween, and said hood having a discharge outlet along a lower marginal portion thereof, and the outer wall portion of the hood adjoining said discharge outlet having a hood, and means for supplying heated air downwardly and inwardly extending exto said interior chamber of the hood to heat the walls of the hood and to assist the circulation of the vapors through the hood.

16. The combination with an apparatus from which condensable vapors are given 011', of a hood associated with said apparatus to receive the vapors directly therefrom, a stack leading off from the hood, said hood having double walls with an interior chamber therebetween, the double Walls of the sides of the hood converging toward the lower end of the hood, andsaid side walls each having a discharge outlet along a lower marginal portion thereof from the interior chamber adjoining the interior of the hood, and means for supplying heated air to the said interior chamber of the hood to heat the walls of the hood and to assist the circulation of the vapors through the hood.

In testimony whereof I hereunto afiix my 20 signature. GEORGE STANFORD WITHAM, 'JR. 

